1161

Science, its principles and rules.

OF THE ERRORS OF THOSE WHO DEPEND ON PRACTICE WITHOUT SCIENCE.

Those who fall in love with practice without science are like a sailor who enters a ship without a helm or a compass, and who never can be certain whither he is going.

II.

MORALS.

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

1160 * 1162

XVIII * XX

Notebooks of Leonoardo da Vinci

XIX: Philosophical Maxims. Morals. Polemics and Speculations.

. . .

1141,

1142,

1143,

1144,

1145,

1146,

1147

Science, its principles and rules.

1148,

1149,

1150,

1151,

1152,

1153,

1154,

1155,

1156,

1157,

1158,

1159,

1160,

1161

What is life?.

1162,

1163

Death.

1164

How to spend life.

1165,

1166,

1167,

1168,

1169,

1170,

1171,

1172,

1173,

1174,

1175,

1176,

1177,

1178,

1179

On foolishness and ignorance.

1180,

1181

. . .