Instrumental or mechanical science is the noblest and above all others, the most useful.

O neglectful Nature, wherefore art thou thus partial, becoming to some of thy children a tender and benignant mother, to others a most cruel and ruthless stepmother? I see thy children given into slavery to others without ever receiving any benefit, and in lieu of any reward for the services they have done for them they are repaid by the severest punishments.

Putting your hand into a river, you simultaneously touch the last of what is passing and the first of what is coming.

To be a winner you must want to win but must know of the chance of losing and must not fear of it.

To me it seems that those sciences are vain and full of error which are not born of experience, mother of all certainty, first-hand experience which in its origins, or means, or end has passed through one of the five senses.

Every action needs to be prompted by a motive. To know and to will are two operations of the human mind. Discerning, judging, deliberating are acts of the human mind.

Of the original phenomena, light is the most enthralling.