Don't stop

• “The important thing is to not stop questioning. Curiosity has its own reason for existing.”
  —Albert Einstein --- Quoted by William Miller in Life Magazine, May 2,1955
• “To punish me for my contempt of authority, Fate has made me an authority myself.”
• “If you want to live a happy life, tie it to a goal, not to people or objects.”
• “The value of an education in a liberal arts college is not the learning of many facts, but the training of the mind to think something that cannot be learned from textbooks.”
• “O, Youth: Do you know that yours is not the first generation to yearn for a life full of beauty and freedom?”

But here's the smartest thing Einstein ever said, in my opinion, besides the "important thing"...

"How strange is the lot of us mortals! Each of us is here for a brief sojourn; for what purpose he knows not, though he sometimes thinks he senses it. But without deeper reflection one knows from daily life that one exists for other people — first of all for those upon whose smiles and well-being our own happiness is wholly dependent, and then for the many, unknown to us, to whose destinies we are bound by the ties of sympathy. A hundred times every day I remind myself that my inner and outer life are based on the labors of other men [and women], living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving.”

Einstein on Kindness, Our Shared Existence, and Life’s Highest Ideals | Brain Pickings:

William James also said a lot of smart things, too. 

“Beyond the very extreme of fatigue and distress, we may find amounts of ease and power we never dreamed ourselves to own; sources of strength never taxed at all because we never push through the obstruction.” 

“Seek out that particular mental attribute which makes you feel most deeply and vitally alive, along with which comes the inner voice which says, 'This is the real me,' and when you have found that attitude, follow it.” 

“The great use of life is to spend it for something that will outlast it.” 

“The moral flabbiness born of the exclusive worship of the bitch-goddess SUCCESS. That - with the squalid cash interpretation put on the word 'success' - is our national disease."

“My experience is what I agree to attend to.” 

“Philosophy is "an unusually stubborn attempt to think clearly.” 

William James‏@WillmJames

The really vital question for us all is, What is this world going to be? What is life eventually to make of itself?

“Philosophy lives in words, but truth and fact well up into our lives in ways that exceed verbal formulation.” 

"Habit is thus the enormous fly-wheel of society..."

"Let my last word, then, speaking in the name of intellectual philosophy, be... — "There is no conclusion. What has concluded, that we might conclude in regard to it? There are no fortunes to be told, and no advice to be given. Farewell!" William James, "A Pluralistic Mystic," 1910