Leonardo da Vinci

The greatest deception men suffer is from their own opinions.

The greatest deception men suffer is from their own opinions.

Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is read more

Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is to commence with experience and from this to proceed to investigate the reason.

I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not read more

I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.

Experience does not ever err; it is only your judgment that errs in promising itself results which are not caused read more

Experience does not ever err; it is only your judgment that errs in promising itself results which are not caused by your experiments

In rivers, the water that you touch is the last of what has passed and the first of that which read more

In rivers, the water that you touch is the last of what has passed and the first of that which comes; so with present time.