Sanity.
Bits of rolled-up rubber shed by the tires of race cars that accumulate at the edges of the track, especially at the corners.
Any of several children's games played with small balls (made of marble or more commonly glass).
Rational thinking (or the capacity for it); the cognitive faculties, collectively, of conception, judgment, deduction and intuition.
That which causes something: an efficient cause, a proximate cause.
An excuse: a thought or a consideration offered in support of a determination or an opinion; that which is offered or accepted as an explanation.
A premise placed after its conclusion.
A motive for an action or a determination.
To support with reasons, as a request.
To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss.
To persuade by reasoning or argument.
To find by logical process; to explain or justify by reason or argument.
To deduce or come to a conclusion by being rational
To overcome or conquer by adducing reasons.
To perform a process of deduction or of induction, in order to convince or to confute; to argue.