to call out to; to hail; to address; to appeal
guaranteed; authentic; certified
plus; addition; positive number; gain; advantage; anode
friendship; fellowship; camaraderie
encouragement; spurring (on); cheering (on)
combination; union; binding; bond
confrontation; opposition; antagonism
leading (e.g. role); instructive; guiding
learning; scholarship; study; study of ...; -ology; -ics
even if; (it doesn't matter) whether (A or B or ...); whatever; should
management; administration; operation
direction; way; side (of an argument, etc.); one's part; type; category; field (of study, etc.)
senility; senile decay; infirmity (through age)
underestimation; undervaluation
Thales (Greek mathematician, c.624-546 BCE)
one copy (of a book, magazine, etc.); one volume
origin; root; cause; principle
proposition; thesis; notion; problem; issue; challenge
beginning; start; first (in line, etc.); origin; such as ...; not to mention ...
actual existence; real existence; existing in real life
use; utility; effect; benefit
careful consideration; deliberation; thinking over carefully
to have; to possess; to own; to be endowed with
research; investigation; enquiry; inquiry; study
mindset; outlook; view; way of looking at things; perspective
wonder; miracle; amazement; prodigy
sense; idea; desire; concern; attention; care
travel; trip; journey; excursion; tour
overflowing; flood; inundation; oversupply; plethora
some book; book about that subject; books
root; source; origin; cause