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.

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
. . .