A quantity which is increased or decreased by an infinitely small quantity is neither increased nor decreased. — Johann Bernoulli Copy Share Image
The solution "cost me study that robbed me of rest for an entire night." — Johann Bernoulli Copy Share Image
A quantity which is increased or decreased by an infinitely small quantity is neither increased nor decreased. — Johann Bernoulli Copy Share Image
But just as much as it is easy to find the differential [derivative] of a given quantity, so it is difficult to find the… — Johann Bernoulli Copy Share Image
![“But just as much as it is easy to find the differential [derivative] of a given quantity, so it is difficult to find the integral of a given differential. Moreover, sometimes we cannot say with certainty whether the integral of a given quantity can be found or not.” quote by Johann Bernoulli](https://sms4smile.com/quotes/img-quotes/324/johann-bernoulli-74276_calculus_but-just-as-much-as-it-is-easy-to-find-t_3054028.jpg)