Thoughts without content are empty, intuitions without concepts are blind.

Everybody is ignorant, only on different subjects.

It is always advisable to perceive clearly our ignorance.

Unfortunately, the clock is ticking, the hours are going by. The past increases, the future recedes. Possibilities decreasing, regrets mounting.

Better mad with the rest of the world than wise alone.

The weak can never forgive. Forgiveness is the attribute of the strong.

I think, therefore I am.

Don't compromise yourself. You are all you've got.

If you have no problems, then you have no clue to what is going.

Don't expect to build up the weak by pulling down the strong.

Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.

Dark and difficult times lie ahead. Soon we must all face the choice between what is right and what is easy.

The absent are never without fault, nor the present without excuse.

Creativity is the process of having original ideas that have value.

Men build too many walls and not enough bridges.

Be silent or let thy words be worth more than silence.

Obsession is the wellspring of genius and madness.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

Anywhere you go in the world is what you make of it, not what you read in books.

It is easy to be brave at a safe distance.

Yes, I guess you could say I am a loner, but I feel more lonely in a crowed room with boring people than I feel on my own.