1156

Science, its principles and rules.

Every instrument requires to be made by experience.

Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.

Notebooks of Leonoardo da Vinci

XIX: Philosophical Maxims. Morals. Polemics and Speculations.

. . .

1136,

1137,

1138,

Psychology.

1140,

1141,

1142,

1143,

1144,

1145,

1146,

Science, its principles and rules.

1148,

1149,

1150,

1151,

1152,

1153,

1154,

1155,

1156,

1157,

1158,

1159,

1160,

What is life?.

1162,

Death.

How to spend life.

1165,

1166,

1167,

1168,

1169,

1170,

1171,

1172,

1173,

1174,

1175,

. . .