Reason Is Nothing Without Imagination.

Desire Awakens Only To Things That Are Thought Possible.

Divide Each Difficulty At Hand Into As Many Pieces As Possible And As Could Be Required To Better Solve Them.

I Know That I Exist; The Question Is, What Is This 'i' That 'i' Know.

The Senses Deceive From Time To Time, And It Is Prudent Never To Trust Wholly Those Who Have Deceived Us Even Once.

Everything Is Self-evident.