“The only real valuable thing is intuition.”

Setting an example is not the main means of influencing another, it is the only means.

Great ideas often receive violent opposition from mediocre minds.

One may say the eternal mystery of the world is its comprehensibility.

Once we accept our limits, we go beyond them.

I never think of the future. It comes soon enough.

When the solution is simple, God is answering.

Anyone who doesn't take truth seriously in small matters cannot be trusted in large ones either.

Feeling and longing are the motive forces behind all human endeavor and human creations.