Use "perspicuity" em uma frase

1. In point of perspicuity, precision, and distinctness, therefore, the duties of customs are much inferior to those of excise

2. For this I waited with patience, and have listened with attention and with pleasure—it has been given with promptness, with ability, and with candor; and with that perspicuity which frees the mind from all doubt as to the course which, in their judgment, we ought to pursue