by John Marshall Harlan, Rio Grande Railway Company v. Leak…
“ Of course, when persons are acting under dangerous circumstances and conditions, it is their duty to act with respect to the danger that surrounds them, and to use a greater degree of care where there is much danger than where there is but little.'The jury were also instructed that it was their duty to take into consideration all the evidence bearing upon the question of negligence, and, in the light of it all, determine whether the defendant was guilty of the negligence charged, or whether the plaintiff was guilty of negligence contributing to the injury. ”
