Mathematics possess not only truth, but also a certain supreme beauty. A cold and austere beauty, like that of a sculpture.
Slander is always simple and plausible.
A symptom of approaching a nervous breakdown is believing that your work is tremendously important.
Much of what passes for idealism is masked hatred or love for power.
Among all forms of caution, caution in love is possibly the most lethal to true happiness.
When you encounter opposition, even if it comes from your husband or your children, try to overcome it through reason and not authority, for a victory based on authority is unreal and illusory.
Do not consider it appropriate to act by hiding evidence, as evidence eventually comes to light.
Sé sincero, incluso si la verdad es inconveniente, pues resulta más inconveniente cuando tratas de ocultarla.