Albert einstein was a famous, and probably the most well know one.
They needed more slaves to pick the cotton.
Sorry if this is wrong.=^\
anxiety
/aŋˈzʌɪəti/
Learn to pronounce
noun
noun: anxiety; plural noun: anxieties
1.
a feeling of worry, nervousness, or unease about something with an uncertain outcome.
"he felt a surge of anxiety"
h
Similar:
worry
concern
apprehension
apprehensiveness
consternation
uneasiness
unease
fearfulness
fear
disquiet
disquietude
perturbation
fretfulness
agitation
angst
nervousness
nerves
edginess
tension
tenseness
stress
misgiving
trepidation
foreboding
suspense
butterflies (in one's stomach)
the willies
the heebie-jeebies
the jitters
the shakes
the jumps
the yips
collywobbles
jitteriness
jim-jams
twitchiness
the (screaming) abdabs
Joe Blakes
worriment
h
Opposite:
calmness
serenity
Psychiatry
a nervous disorder marked by excessive uneasiness and apprehension, typically with compulsive behaviour or panic attacks.
"she suffered from anxiety attacks"
2.
strong desire or concern to do something or for something to happen.
"the housekeeper's eager anxiety to please"
h
Similar:
eagerness
keenness
desire
impatience
longing
yearning
This is interesting .. could you be more in detail ?