Both of my questions are about sentences from Abraham Lincoln's letter to the teacher of his son. I'll quote them verbatim:
1) "Teach him to listen to every one, but teach him also to filters all that he hears on a screen of truth and take only the good that comes through."
2) "Let him have the courage to be impatient, let him have the patient to be brave."
(1) I do not quite comprehend , if the used 'filter' is the verb would not it be more correct to say 'to filter' ?
(2) Would not "patience" would be the better word?