Airplane travel is nature's way of making you look like your passport photo.

I have often been accused of putting my foot in my mouth, but I will never put my hand in your pockets

I am not now That which I have been.

By seeing London, I have seen as much of life as the world can show.

A man can do what he wants, but not want what he wants.

For the meaning of life differs from man to man, from day to day and from hour to hour. What matters, therefore, is not the meaning of life in general but rather the specific meaning of a person's life at a given moment.

No matter how thin you slice it, there will always be two sides.

The idea is to write it so that people hear it and it slides through the brain and goes straight to the heart.

Reverence does not die with mortals, nor does it perish whether they live or die.

After all, science is essentially international, and it is only through lack of the historical sense that national qualities have been attributed to it.

I love children, especially when they cry, for then someone takes them away.

The more you like yourself, the less you are like anyone else, which makes you unique.

If we all worked on the assumption that what is accepted as true is really true, there would be little hope of advance.

The difficulty is to try and teach the multitude that something can be true and untrue at the same time.

It is the story that owns and directs us. It is the thing that makes us different from cattle; it is the mark on the face that sets one people apart from their neighbors.

Even if you are divine, you don't disdain male consorts.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

If the world was perfect, it wouldn't be.

The advantage of a bad memory is that one enjoys several times the same good thing for the first time.

I am not interested in picking up crumbs of compassion thrown from the table of someone who considers himself my master. I want the full menu of rights.

Every man is guilty of all the good he did not do.