However difficult life may seem, there is always something you can do and succeed at.

My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.

It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is most adaptable to change.

-- Charles Darwin

Reserve your right to think, for even to think wrongly is better than not to think at all.

-- Hypatia

Behold what is absent as firmly present through the mind.

-- Parmenides

The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.

-- Bertrand Russell

The biggest risk is not taking any risk. In a world that is changing really quickly, the only strategy that is guaranteed to fail is not taking risks.

-- Mark Zuckerberg

Knowledge is the conformity of the object and the intellect.

-- Averroes