Nature never deceives us; 

it is we who deceive ourselves.

The only thing worse than being blind is having sight but no vision.

The man who voyages strange seas must 

of necessity 

be a little unsure of himself. 

It is the man with the flashy air of knowing everything, 

who is always with it, 

that we should beware of.

The order of ideas must follow the order of things.

My thought is me: 

that is why I cannot stop thinking. 

I exist because I think 

I cannot keep from thinking.

Imagination disposes of everything; 

it creates beauty, justice, and happiness, 

which are everything in this world.

While living 

I want to live well.

It's a matter of taking the side of the weak against the strong, 

something the best people have always done.

Joy is 

of the will which labours, 

which overcomes obstacles, 

which knows triumph.

There is no better high than discovery.

Study nature, 

love nature, 

stay close to nature. 

It will never fail you.

Human reason needs only to will more strongly than fate, and she is fate.

Thinking is the best way to travel.

Time changes everything except something within us which is always surprised by change.

The future is no more uncertain than the present.