You cannot truly listen to anyone and do anything else at the same time.

You are not a drop in the ocean. You are the entire ocean, in a drop.

Think no vice so small that you may commit it, and no virtue so small that you may over look it.

Never ruin an apology with an excuse.

Rest satisfied with doing well, and leave others to talk of you as they please.

Circumstances do not make a man, they reveal him.

A scholar who cherishes the love of comfort is not fit to be deemed a scholar.

Do not deny the classical approach, simply as a reaction, or you will have created another pattern and trapped yourself there.

And this sensitivity will create new friendships for you - friendships with trees, with birds, with animals, with mountains, with rivers, with oceans, with stars. Life becomes richer as love grows.

The future is uncertain but the end is always near.

There are things known and there are things unknown, and in between are the doors of perception.

The most courageous act is still to think for yourself. Aloud.

In the practice of tolerance, one's enemy is the best teacher.

Each problem that I solved became a rule which served afterwards to solve other problems.

If we do not lay out ourselves in the service of mankind whom should we serve?

There is geometry in the humming of the strings. There is music in the spacing of the spheres.

Be curious, not judgmental.

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

Bitterness is like cancer. It eats upon the host. But anger is like fire. It burns it all clean.

Tact is the knack of making a point without making an enemy.

We are all born ignorant, but one must work hard to remain stupid