It's a great advantage not to drink among hard-drinking people. You can hold your tongue, and, moreover, you can time any little irregularity of your own so that everybody else is so blind that they don't see or care.

Thought is the work of the intellect, reverie is its self-indulgence. To substitute day-dreaming for thought is to confuse a poison with a source of nourishment.

So with each advance in understanding come new questions. So we need to be very humble. We shouldn’t have hubris and think that we can understand everything. But history tells us that there is good reason to believe that we will continue making fantastic progress in the years ahead.

Each night the black sky and the bright stars were my stunning companions; occasionally Id see their beauty and solemnity so plainly that I'd realize in a piercing way that my mother was right. That someday I WOULD be grateful and that in fact I was grateful now, that I felt something growing in me that was strong and real.

Books are but waste paper unless we spend in action the wisdom we get from thought - asleep. When we are weary of the living, we may repair to the dead, who have nothing of peevishness, pride, or design in their conversation.

I don't know if I continue, even today, always liking myself. But what I learned to do many years ago was to forgive myself. It is very important for every human being to forgive herself or himself because if you live, you will make mistakes - it is inevitable. But once you do and you see the mistake, then you forgive yourself and say, 'Well, if I'd known better I'd have done better,' that's all.