Life is not easy for any for us.

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

First principle: never to let one's self be beaten down by persons or by events.

Be less curious about people and more curious about ideas.

Nothing in this world is to be feared... only understood.

You cannot hope to build a better world without improving the individuals.

A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.

I never see what has been done; I only see what remains to be done.

Each of us must work for his own improvement, and at the same time share a general responsibility for all humanity.

We must have perseverance and above all confidence in ourselves.

The older one gets, the more one feels that the present must be enjoyed; it is a precious gift, comparable to a state of grace

When life hands you lemons sometimes you just have to say screw the lemons, and bail.

You learn about equality in history and civics, but you find out life is not really like that.

Give me a bottle of hard cider, a bowl of Peterson Irish Oak in my Neerup pipe, and please, above all, give my Henry David Thoreau’s Wild Apples. Do that and you will see a man contented.

As for multimillionaires [in Donald Trump's Administration], a lot of us hope to be a multimillionaire some day. Again, spotty records, but it seems to be not without the range.

Professors simply can't discuss a thing. Habit compels them to deliver a lecture.

To avoid discovery I stay on the run. To discover things for myself, I stay on the run.

I'm all for whatever it takes to get wherever you need to get with a character, as long as you don't wipe it on me.

If you're blessed enough to grow older, which is how I look at aging, there's so much wisdom to be gained from people who are celebrating the process with vibrancy and vigor and grace.

I never confuse the cost of something with its value

Things are often spoke and seldom meant.