Thus each truth discovered was a rule available in the discovery of subsequent ones.

We do not describe the world we see, we see the world we can describe.

Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it.

De omnibus dubitandum

Divide each difficulty into as many parts as is feasible and necessary to resolve it.

Conquer yourself rather than the world.

The reading of all good books is like a conversation with the finest minds of past centuries.

The chief cause of human errors is to be found in the prejudices picked up in childhood.

Doubt is the origin of wisdom

The only thing we have power over in the universe is our own thoughts.

How can you be certain that your whole life is not a dream?

Great goals make great people. People cannot hit what they do not aim for.

Our willingness to embrace the realities of our neighbor's difficulty is what empowers our witness and makes our testimony of Christ effective and hearable.

Human beings tend to be unable to estimate how biased they are.

I wonder if other dogs think poodles are members of a weird religious cult.

The very poor are strictly materialistic. It takes money to be a mystic.

What appears is good; what is good appears.

in terms of the biology of the planet, development is a euphemism for destruction.

Experimentation is the least arrogant method of gaining knowledge. The experimenter humbly asks a question of nature.

people commit suicide for only one reason - to escape torment.

Let my love like sunlight surround you and yet give you illumined freedom.