Logic is the foundation of the certainty of all the knowledge we acquire.

For the sake of brevity, we will always represent this number 2.718281828459... by the letter e.

Nothing takes place in the world whose meaning is not that of some maximum or minimum.

For since the fabric of the universe is most perfect and the work of a most wise Creator, nothing at all takes place in the universe in which some rule of maximum or minimum does not appear.

Now I will have less distraction.

Madam, I have come from a country where people are hanged if they talk.

Transcendental [numbers], They transcend the power of algebraic methods.

After exponential quantities the circular functions, sine and cosine, should be considered because they arise when imaginary quantities are involved in the exponential.

A function of a variable quantity is an analytic expression composed in any way whatsoever of the variable quantity and numbers or constant quantities.

Madam, I have just come from a country where people are hanged if they talk.

Maybe you should say goodbye, Cal.''No.''It might be important.''It might make her die.

As soon as you find the key to success somebody always changes the lock.

What we do modifies us more than what is done to us.

The major novelty of my theory was its claim that the most rapid evolutionary change does not occur in widespread, populous species, as claimed by Most geneticists, but in small founder populations.

The Righteous Salaf were as fearful of their good deeds being squandered, or not being accepted, as the present generation is certain that their neglect would be forgiven.

Life isn't nearly as stable as we want it to be.

Policies are many, Principles are few, Policies will change, Principles never do.

I will be the focal point for however long I decide to play. Half of me likes that idea and half of me doesn't, but once the adrenaline kicks in, I'll probably really enjoy it.

A genius may perhaps be a century ahead of his age and hence stands there as a paradox, but in the end, the race will assimilate what was once a paradox, so it is no longer paradoxical.

If I didn't play tennis I don't know where I'd be.