Contentment Is The Only Real Wealth.

One Can State, Without Exaggeration, That The Observation Of And The Search For Similarities And Differences Are The Basis Of All Human Knowledge.

The First Time I Saw Nitroglycerine Was In The Beginning Of The Crimean War. Professor Zinin In St. Petersburg Exhibited Some To My Father And Me, And Struck Some On An Anvil To Show That Only The Part Touched By The Hammer Exploded Without Spreading.

The Truthful Man Is Usually A Liar.

Hope Is Nature's Veil For Hiding Truth's Nakedness.

Lying Is The Greatest Of All Sins.